//
//  Packing.h
//  Item
//
//  Created by flannery on 2018/12/17.
//  Copyright © 2018年 flannery. All rights reserved.
//

#import <Foundation/Foundation.h>

@protocol Packing <NSObject>
-(NSString*)pack;
@end

@interface Wrapper : NSObject <Packing>
@end

@interface Bottle : NSObject <Packing>
@end


